CVE-2006-0805 EXPLOIT
7.5
HIGH · CVSS 2.0 · EPSS 3% (pctl 87)
Patch early
A public exploit exists.
Description
The CAPTCHA functionality in php-Nuke 6.0 through 7.9 uses fixed challenge/response pairs that only vary once per day based on the User Agent (HTTP_USER_AGENT), which allows remote attackers to bypass CAPTCHA controls by fixing the User Agent, performing a valid challenge/response, then replaying that pair in the random_num and gfx_check parameters.
Scoring
| CVSS | 7.5 (HIGH, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| EPSS | 3% — more likely to be exploited than 87% of all CVEs |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2006-02-21 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| francisco burzi | php-nuke |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | PHP-Nuke 7.x - CAPTCHA Bypass | 2006-02-18 |
References
- http://secunia.com/advisories/18936
- http://securityreason.com/securityalert/455
- http://www.securityfocus.com/archive/1/425394/100/0/threaded
- http://www.securityfocus.com/bid/16722
- http://www.waraxe.us/advisory-45.html
- http://secunia.com/advisories/18936
- http://securityreason.com/securityalert/455
- http://www.securityfocus.com/archive/1/425394/100/0/threaded
- http://www.securityfocus.com/bid/16722
- http://www.waraxe.us/advisory-45.html
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